I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

Scientists agreed the rocky outcrops in a remote part of Quebec, Canada, were ancient. But were they really Earth’s oldest?

The Vera C. Rubin Observatory is expected to find millions of unknown objects in our solar system, and perhaps even a ...

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

Astronomers have discovered a new object that originated outside of our Solar System — only the third to be found.

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to oblivion ...

It appears our solar system is getting more popular with out-of-towners. Astronomers have found a third interstellar object, ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

With 3.2 billion pixels and a decade-long search, the Rubin Observatory will reveal what’s been hiding in plain sight.

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.